Motion: Adopt libgeotiff 1.4.2RC4 as 1.4.2 Release

Motion: Adopt libgeotiff 1.4.2RC4 as 1.4.2 Release

Hi,

I retract the previous motion regarding 1.4.2RC3, and thus submit a new motion
to adopt libgeotiff 1.4.2 RC4 as the final release. The changes between RC3 and
RC4 are only related to fixing Windows CMake builds.

Charles has confirmed the Windows build issues were fixed with RC4, and I see
that RC4 has been accepted into Debian experimental.